Some country are now accepting bitcoin as currency and the billionaires is now hoarding thousands of Bitcoin. Should I wait for the success of El Salvador's implemetation of bitcoin before investing?
I think if they become a more successful country by accepting bitcoin, others will implement too. There will be more investors and the bitcoin will be pump again?
I just hope I'm not wrong this time.

If I were you, I would not wait for anything because the bitcoin price now is at a good moment to buy although after I buy it now, the price can still go down but I will be okay with that because I can buy more bitcoin at a low price.
The other countries will accept bitcoin, but that will not happen in a short time because they need to research what benefits they can get from bitcoin so if you do not use this moment, maybe you will regret it later.
But that is up to you because you have the money and you know when you should invest in bitcoin or just wait for the other time when the price is getting down.
If so, you will need a longer time to buy bitcoin because you expect to see bitcoin price is down while we do not know what will happen to bitcoin in the next hours.